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      <article class="main-content">
        <section>
          <section class="section">
            <h1>UIView(FWAutoLayout)</h1>
              <div class="declaration">
                <div class="language">
                  
                  <pre class="highlight objective_c"><code><span class="k">@interface</span> <span class="nc">UIView</span> <span class="p">(</span><span class="nl">FWAutoLayout</span><span class="p">)</span></code></pre>

                </div>
              </div>
            <p>UIView自动布局分类，兼容UIView和UILayoutGuide(iOS9)</p>
<div class="aside aside-note">
    <p class="aside-title">Note</p>
    如果约束条件完全相同，会自动更新约束而不是重新添加。
另外，默认布局方式使用LTR，如果需要RTL布局，可通过fwAutoLayoutRTL统一启用

</div>

          </section>
          <section class="section task-group-section">
            <div class="task-group">
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(cpy)fw_autoLayoutRTL"></a>
                    <a name="//apple_ref/swift/Property/fw_autoLayoutRTL" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(cpy)fw_autoLayoutRTL">fw_autoLayoutRTL</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>是否启用自动布局适配RTL，启用后自动将Left|Right转换为Leading|Trailing，默认NO</p>
<div class="aside aside-note">
    <p class="aside-title">Note</p>
    如果项目兼容阿拉伯语等，需要启用RTL从右向左布局，开启此开关即可，无需修改布局代码
手工切换视图左右布局方法：[UIView appearance].semanticContentAttribute = UISemanticContentAttributeForceRightToLeft;

</div>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">class</span><span class="p">,</span> <span class="n">nonatomic</span><span class="p">)</span> <span class="n">BOOL</span> <span class="n">fw_autoLayoutRTL</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(cpy)fw_autoScale"></a>
                    <a name="//apple_ref/swift/Property/fw_autoScale" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(cpy)fw_autoScale">fw_autoScale</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>是否全局自动等比例缩放布局，默认NO</p>
<div class="aside aside-note">
    <p class="aside-title">Note</p>
    启用后所有offset值都会自动*relativeScale，注意可能产生的影响。
启用后注意事项：

</div><ul>
<li>屏幕宽度约束不能使用screenWidth约束，需要使用375设计标准</li>
<li>尽量不使用screenWidth固定屏幕宽度方式布局，推荐相对于父视图布局</li>
<li>只会对offset值生效，其他属性不受影响</li>
<li>如需特殊处理，可以指定某个视图关闭该功能</li>
</ul>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">class</span><span class="p">,</span> <span class="n">nonatomic</span><span class="p">)</span> <span class="n">BOOL</span> <span class="n">fw_autoScale</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/AutoLayout"></a>
                <a name="//apple_ref/swift/Section/AutoLayout" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/AutoLayout"></a>
                  <h3 class="section-name"><span>AutoLayout</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_autoScale"></a>
                    <a name="//apple_ref/swift/Property/fw_autoScale" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_autoScale">fw_autoScale</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>视图是否自动等比例缩放布局，默认返回全局开关</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">BOOL</span> <span class="n"><a href="../Categories/UIView%28FWAutoLayout%29.html#/c:objc(cs)UIView(cpy)fw_autoScale">fw_autoScale</a></span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_autoLayout"></a>
                    <a name="//apple_ref/swift/Property/fw_autoLayout" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_autoLayout">fw_autoLayout</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>是否启用自动布局</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">BOOL</span> <span class="n">fw_autoLayout</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_autoLayoutSubviews"></a>
                    <a name="//apple_ref/swift/Method/-fw_autoLayoutSubviews" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_autoLayoutSubviews">-fw_autoLayoutSubviews</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>执行子视图自动布局，自动计算子视图尺寸。需先将视图添加到界面(如设置为tableHeaderView)，再调用即可(iOS8+)</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="n">fw_autoLayoutSubviews</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_layoutHeightWithWidth:"></a>
                    <a name="//apple_ref/swift/Method/-fw_layoutHeightWithWidth:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_layoutHeightWithWidth:">-fw_layoutHeightWithWidth:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>计算动态布局视图指定宽度时的高度。使用AutoLayout必须约束完整，不使用AutoLayout会调用view的sizeThatFits:方法</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nf">fw_layoutHeightWithWidth</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">width</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_layoutWidthWithHeight:"></a>
                    <a name="//apple_ref/swift/Method/-fw_layoutWidthWithHeight:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_layoutWidthWithHeight:">-fw_layoutWidthWithHeight:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>计算动态布局视图指定高度时的宽度。使用AutoLayout必须约束完整，不使用AutoLayout会调用view的sizeThatFits:方法</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nf">fw_layoutWidthWithHeight</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">height</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Compression"></a>
                <a name="//apple_ref/swift/Section/Compression" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Compression"></a>
                  <h3 class="section-name"><span>Compression</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_compressionHorizontal"></a>
                    <a name="//apple_ref/swift/Property/fw_compressionHorizontal" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_compressionHorizontal">fw_compressionHorizontal</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置水平方向抗压缩优先级</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">UILayoutPriority</span> <span class="n">fw_compressionHorizontal</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_compressionVertical"></a>
                    <a name="//apple_ref/swift/Property/fw_compressionVertical" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_compressionVertical">fw_compressionVertical</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置垂直方向抗压缩优先级</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">UILayoutPriority</span> <span class="n">fw_compressionVertical</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_huggingHorizontal"></a>
                    <a name="//apple_ref/swift/Property/fw_huggingHorizontal" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_huggingHorizontal">fw_huggingHorizontal</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置水平方向抗拉伸优先级</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">UILayoutPriority</span> <span class="n">fw_huggingHorizontal</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_huggingVertical"></a>
                    <a name="//apple_ref/swift/Property/fw_huggingVertical" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_huggingVertical">fw_huggingVertical</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置垂直方向抗拉伸优先级</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">UILayoutPriority</span> <span class="n">fw_huggingVertical</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Collapse"></a>
                <a name="//apple_ref/swift/Section/Collapse" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Collapse"></a>
                  <h3 class="section-name"><span>Collapse</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_collapsed"></a>
                    <a name="//apple_ref/swift/Property/fw_collapsed" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_collapsed">fw_collapsed</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置视图是否收缩，默认NO，YES时常量值为0，NO时常量值为原始值</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">BOOL</span> <span class="n">fw_collapsed</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_autoCollapse"></a>
                    <a name="//apple_ref/swift/Property/fw_autoCollapse" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_autoCollapse">fw_autoCollapse</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置视图是否自动收缩，如image为nil，text为nil、@&ldquo;&quot;时自动收缩，默认NO</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">BOOL</span> <span class="n">fw_autoCollapse</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_hiddenCollapse"></a>
                    <a name="//apple_ref/swift/Property/fw_hiddenCollapse" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_hiddenCollapse">fw_hiddenCollapse</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置视图是否隐藏时自动收缩、显示时自动展开，默认NO</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">)</span> <span class="n">BOOL</span> <span class="n">fw_hiddenCollapse</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_addCollapseConstraint:"></a>
                    <a name="//apple_ref/swift/Method/-fw_addCollapseConstraint:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_addCollapseConstraint:">-fw_addCollapseConstraint:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>添加视图的收缩常量，必须先添加才能生效</p>
<div class="aside aside-see">
    <p class="aside-title">See</p>
    <a href="https://github.com/forkingdog/UIView-FDCollapsibleConstraints">https://github.com/forkingdog/UIView-FDCollapsibleConstraints</a>

</div>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="nf">fw_addCollapseConstraint</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nv">constraint</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Axis"></a>
                <a name="//apple_ref/swift/Section/Axis" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Axis"></a>
                  <h3 class="section-name"><span>Axis</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignCenterToSuperview"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignCenterToSuperview" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignCenterToSuperview">-fw_alignCenterToSuperview</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图居中</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_alignCenterToSuperview</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignCenterToSuperviewWithOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignCenterToSuperviewWithOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignCenterToSuperviewWithOffset:">-fw_alignCenterToSuperviewWithOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图居中偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignCenterToSuperviewWithOffset</span><span class="p">:</span>
    <span class="p">(</span><span class="n">CGPoint</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignAxisToSuperview:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignAxisToSuperview:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignAxisToSuperview:">-fw_alignAxisToSuperview:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图属性居中</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignAxisToSuperview</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">axis</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>axis</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>居中属性</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignAxisToSuperview:withOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignAxisToSuperview:withOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignAxisToSuperview:withOffset:">-fw_alignAxisToSuperview:<wbr>withOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图属性居中偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignAxisToSuperview</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">axis</span>
                                             <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>axis</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>居中属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignAxis:toView:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignAxis:toView:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignAxis:toView:">-fw_alignAxis:<wbr>toView:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与另一视图居中相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignAxis</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">axis</span>
                                      <span class="nf">toView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>axis</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>居中属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图或UILayoutGuide，下同</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignAxis:toView:withOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignAxis:toView:withOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignAxis:toView:withOffset:">-fw_alignAxis:<wbr>toView:<wbr>withOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与另一视图居中偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignAxis</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">axis</span>
                                      <span class="nf">toView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                  <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>axis</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>居中属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignAxis:toView:withMultiplier:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignAxis:toView:withMultiplier:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignAxis:toView:withMultiplier:">-fw_alignAxis:<wbr>toView:<wbr>withMultiplier:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与另一视图居中指定比例</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignAxis</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">axis</span>
                                      <span class="nf">toView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                              <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>axis</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>居中属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Edge"></a>
                <a name="//apple_ref/swift/Section/Edge" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Edge"></a>
                  <h3 class="section-name"><span>Edge</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgesToSuperview"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgesToSuperview" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgesToSuperview">-fw_pinEdgesToSuperview</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图四条边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_pinEdgesToSuperview</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgesToSuperviewWithInsets:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgesToSuperviewWithInsets:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgesToSuperviewWithInsets:">-fw_pinEdgesToSuperviewWithInsets:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图四条边属性距离指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgesToSuperviewWithInsets</span><span class="p">:</span>
    <span class="p">(</span><span class="n">UIEdgeInsets</span><span class="p">)</span><span class="nv">insets</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>insets</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定距离insets</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgesToSuperviewWithInsets:excludingEdge:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgesToSuperviewWithInsets:excludingEdge:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgesToSuperviewWithInsets:excludingEdge:">-fw_pinEdgesToSuperviewWithInsets:<wbr>excludingEdge:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图三条边属性距离指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_pinEdgesToSuperviewWithInsets</span><span class="p">:(</span><span class="n">UIEdgeInsets</span><span class="p">)</span><span class="nv">insets</span>
                       <span class="nf">excludingEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>insets</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定距离insets</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>排除的边</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinHorizontalToSuperview"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinHorizontalToSuperview" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinHorizontalToSuperview">-fw_pinHorizontalToSuperview</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图水平方向两条边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_pinHorizontalToSuperview</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinHorizontalToSuperviewWithInset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinHorizontalToSuperviewWithInset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinHorizontalToSuperviewWithInset:">-fw_pinHorizontalToSuperviewWithInset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图水平方向两条边属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinHorizontalToSuperviewWithInset</span><span class="p">:</span>
    <span class="p">(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinVerticalToSuperview"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinVerticalToSuperview" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinVerticalToSuperview">-fw_pinVerticalToSuperview</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图垂直方向两条边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_pinVerticalToSuperview</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinVerticalToSuperviewWithInset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinVerticalToSuperviewWithInset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinVerticalToSuperviewWithInset:">-fw_pinVerticalToSuperviewWithInset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图垂直方向两条边属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinVerticalToSuperviewWithInset</span><span class="p">:</span>
    <span class="p">(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgeToSuperview:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgeToSuperview:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgeToSuperview:">-fw_pinEdgeToSuperview:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgeToSuperview</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgeToSuperview:withInset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgeToSuperview:withInset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgeToSuperview:withInset:">-fw_pinEdgeToSuperview:<wbr>withInset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图边属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgeToSuperview</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span>
                                            <span class="nf">withInset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgeToSuperview:withInset:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgeToSuperview:withInset:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgeToSuperview:withInset:relation:">-fw_pinEdgeToSuperview:<wbr>withInset:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图边属性偏移指定距离，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgeToSuperview</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span>
                                            <span class="nf">withInset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span>
                                             <span class="nf">relation</span><span class="p">:</span>
                                                 <span class="p">(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdge:toEdge:ofView:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdge:toEdge:ofView:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdge:toEdge:ofView:">-fw_pinEdge:<wbr>toEdge:<wbr>ofView:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span>
                                    <span class="nf">toEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toEdge</span>
                                    <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toEdge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdge:toEdge:ofView:withOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdge:toEdge:ofView:withOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdge:toEdge:ofView:withOffset:">-fw_pinEdge:<wbr>toEdge:<wbr>ofView:<wbr>withOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图边属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span>
                                    <span class="nf">toEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toEdge</span>
                                    <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toEdge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdge:toEdge:ofView:withOffset:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdge:toEdge:ofView:withOffset:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdge:toEdge:ofView:withOffset:relation:">-fw_pinEdge:<wbr>toEdge:<wbr>ofView:<wbr>withOffset:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图边属性偏移指定距离，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span>
                                    <span class="nf">toEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toEdge</span>
                                    <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span>
                                  <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toEdge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>另一视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/SafeArea"></a>
                <a name="//apple_ref/swift/Section/SafeArea" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/SafeArea"></a>
                  <h3 class="section-name"><span>SafeArea</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignCenterToSafeArea"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignCenterToSafeArea" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignCenterToSafeArea">-fw_alignCenterToSafeArea</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图安全区域居中。iOS11以下使用Superview实现，下同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_alignCenterToSafeArea</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignCenterToSafeAreaWithOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignCenterToSafeAreaWithOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignCenterToSafeAreaWithOffset:">-fw_alignCenterToSafeAreaWithOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图安全区域居中偏移指定距离。iOS11以下使用Superview实现，下同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignCenterToSafeAreaWithOffset</span><span class="p">:</span>
    <span class="p">(</span><span class="n">CGPoint</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignAxisToSafeArea:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignAxisToSafeArea:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignAxisToSafeArea:">-fw_alignAxisToSafeArea:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图安全区域属性居中</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignAxisToSafeArea</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">axis</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>axis</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>居中属性</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_alignAxisToSafeArea:withOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_alignAxisToSafeArea:withOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_alignAxisToSafeArea:withOffset:">-fw_alignAxisToSafeArea:<wbr>withOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>父视图安全区域属性居中偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_alignAxisToSafeArea</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">axis</span>
                                            <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>axis</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>居中属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgesToSafeArea"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgesToSafeArea" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgesToSafeArea">-fw_pinEdgesToSafeArea</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域四条边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_pinEdgesToSafeArea</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgesToSafeAreaWithInsets:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgesToSafeAreaWithInsets:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgesToSafeAreaWithInsets:">-fw_pinEdgesToSafeAreaWithInsets:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域四条边属性距离指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgesToSafeAreaWithInsets</span><span class="p">:</span>
    <span class="p">(</span><span class="n">UIEdgeInsets</span><span class="p">)</span><span class="nv">insets</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>insets</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定距离insets</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgesToSafeAreaWithInsets:excludingEdge:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgesToSafeAreaWithInsets:excludingEdge:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgesToSafeAreaWithInsets:excludingEdge:">-fw_pinEdgesToSafeAreaWithInsets:<wbr>excludingEdge:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域三条边属性距离指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_pinEdgesToSafeAreaWithInsets</span><span class="p">:(</span><span class="n">UIEdgeInsets</span><span class="p">)</span><span class="nv">insets</span>
                      <span class="nf">excludingEdge</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>insets</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定距离insets</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>排除的边</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinHorizontalToSafeArea"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinHorizontalToSafeArea" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinHorizontalToSafeArea">-fw_pinHorizontalToSafeArea</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域水平方向两条边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_pinHorizontalToSafeArea</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinHorizontalToSafeAreaWithInset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinHorizontalToSafeAreaWithInset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinHorizontalToSafeAreaWithInset:">-fw_pinHorizontalToSafeAreaWithInset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域水平方向两条边属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinHorizontalToSafeAreaWithInset</span><span class="p">:</span>
    <span class="p">(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinVerticalToSafeArea"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinVerticalToSafeArea" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinVerticalToSafeArea">-fw_pinVerticalToSafeArea</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域垂直方向两条边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="n">fw_pinVerticalToSafeArea</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinVerticalToSafeAreaWithInset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinVerticalToSafeAreaWithInset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinVerticalToSafeAreaWithInset:">-fw_pinVerticalToSafeAreaWithInset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域垂直方向两条边属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinVerticalToSafeAreaWithInset</span><span class="p">:</span>
    <span class="p">(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgeToSafeArea:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgeToSafeArea:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgeToSafeArea:">-fw_pinEdgeToSafeArea:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域边属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgeToSafeArea</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgeToSafeArea:withInset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgeToSafeArea:withInset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgeToSafeArea:withInset:">-fw_pinEdgeToSafeArea:<wbr>withInset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域边属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgeToSafeArea</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span>
                                           <span class="nf">withInset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_pinEdgeToSafeArea:withInset:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_pinEdgeToSafeArea:withInset:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_pinEdgeToSafeArea:withInset:relation:">-fw_pinEdgeToSafeArea:<wbr>withInset:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与父视图安全区域边属性偏移指定距离，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_pinEdgeToSafeArea</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">edge</span>
                                           <span class="nf">withInset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span>
                                            <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>edge</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定边属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>inset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Dimension"></a>
                <a name="//apple_ref/swift/Section/Dimension" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Dimension"></a>
                  <h3 class="section-name"><span>Dimension</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_setDimensionsToSize:"></a>
                    <a name="//apple_ref/swift/Method/-fw_setDimensionsToSize:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_setDimensionsToSize:">-fw_setDimensionsToSize:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置宽高尺寸</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_setDimensionsToSize</span><span class="p">:(</span><span class="n">CGSize</span><span class="p">)</span><span class="nv">size</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>size</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸大小</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束数组</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_setDimension:toSize:"></a>
                    <a name="//apple_ref/swift/Method/-fw_setDimension:toSize:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_setDimension:toSize:">-fw_setDimension:<wbr>toSize:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置某个尺寸</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_setDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                         <span class="nf">toSize</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">size</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>size</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸大小</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_setDimension:toSize:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_setDimension:toSize:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_setDimension:toSize:relation:">-fw_setDimension:<wbr>toSize:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置某个尺寸，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_setDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                         <span class="nf">toSize</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">size</span>
                                       <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>size</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸大小</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_matchDimension:toDimension:withMultiplier:"></a>
                    <a name="//apple_ref/swift/Method/-fw_matchDimension:toDimension:withMultiplier:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_matchDimension:toDimension:withMultiplier:">-fw_matchDimension:<wbr>toDimension:<wbr>withMultiplier:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与视图自身尺寸属性指定比例</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_matchDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                      <span class="nf">toDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toDimension</span>
                                   <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toDimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_matchDimension:toDimension:withMultiplier:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_matchDimension:toDimension:withMultiplier:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_matchDimension:toDimension:withMultiplier:relation:">-fw_matchDimension:<wbr>toDimension:<wbr>withMultiplier:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与视图自身尺寸属性指定比例，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_matchDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                      <span class="nf">toDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toDimension</span>
                                   <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span>
                                         <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toDimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:"></a>
                    <a name="//apple_ref/swift/Method/-fw_matchDimension:toDimension:ofView:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:">-fw_matchDimension:<wbr>toDimension:<wbr>ofView:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图尺寸属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_matchDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                      <span class="nf">toDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toDimension</span>
                                           <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toDimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_matchDimension:toDimension:ofView:withOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withOffset:">-fw_matchDimension:<wbr>toDimension:<wbr>ofView:<wbr>withOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图尺寸属性相差指定大小</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_matchDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                      <span class="nf">toDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toDimension</span>
                                           <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                       <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toDimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>相差大小</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withOffset:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_matchDimension:toDimension:ofView:withOffset:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withOffset:relation:">-fw_matchDimension:<wbr>toDimension:<wbr>ofView:<wbr>withOffset:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图尺寸属性相差指定大小，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_matchDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                      <span class="nf">toDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toDimension</span>
                                           <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                       <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span>
                                         <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toDimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>相差大小</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withMultiplier:"></a>
                    <a name="//apple_ref/swift/Method/-fw_matchDimension:toDimension:ofView:withMultiplier:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withMultiplier:">-fw_matchDimension:<wbr>toDimension:<wbr>ofView:<wbr>withMultiplier:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图尺寸属性指定比例</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_matchDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                      <span class="nf">toDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toDimension</span>
                                           <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                   <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toDimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withMultiplier:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_matchDimension:toDimension:ofView:withMultiplier:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_matchDimension:toDimension:ofView:withMultiplier:relation:">-fw_matchDimension:<wbr>toDimension:<wbr>ofView:<wbr>withMultiplier:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图尺寸属性指定比例，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_matchDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">dimension</span>
                                      <span class="nf">toDimension</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toDimension</span>
                                           <span class="nf">ofView</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                   <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span>
                                         <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>dimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toDimension</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标尺寸属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Constrain"></a>
                <a name="//apple_ref/swift/Section/Constrain" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Constrain"></a>
                  <h3 class="section-name"><span>Constrain</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constrainAttribute:toAttribute:ofView:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:">-fw_constrainAttribute:<wbr>toAttribute:<wbr>ofView:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图属性相同</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_constrainAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
              <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                   <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constrainAttribute:toAttribute:ofView:withOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withOffset:">-fw_constrainAttribute:<wbr>toAttribute:<wbr>ofView:<wbr>withOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图属性偏移指定距离</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_constrainAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
              <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                   <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
               <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withOffset:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constrainAttribute:toAttribute:ofView:withOffset:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withOffset:relation:">-fw_constrainAttribute:<wbr>toAttribute:<wbr>ofView:<wbr>withOffset:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图属性偏移指定距离，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_constrainAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
              <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                   <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
               <span class="nf">withOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span>
                 <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>offset</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>偏移距离</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withMultiplier:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constrainAttribute:toAttribute:ofView:withMultiplier:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withMultiplier:">-fw_constrainAttribute:<wbr>toAttribute:<wbr>ofView:<wbr>withMultiplier:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图属性指定比例</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_constrainAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
              <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                   <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
           <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withMultiplier:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constrainAttribute:toAttribute:ofView:withMultiplier:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constrainAttribute:toAttribute:ofView:withMultiplier:relation:">-fw_constrainAttribute:<wbr>toAttribute:<wbr>ofView:<wbr>withMultiplier:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>与指定视图属性指定比例，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_constrainAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
              <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                   <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
           <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span>
                 <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Offset"></a>
                <a name="//apple_ref/swift/Section/Offset" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Offset"></a>
                  <h3 class="section-name"><span>Offset</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_setOffset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_setOffset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_setOffset:">-fw_setOffset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>修改最近一批添加或更新的布局约束偏移值</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_setOffset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">offset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_setInset:"></a>
                    <a name="//apple_ref/swift/Method/-fw_setInset:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_setInset:">-fw_setInset:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>修改最近一批添加或更新的布局约束内间距值</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_setInset</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">inset</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_setPriority:"></a>
                    <a name="//apple_ref/swift/Method/-fw_setPriority:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_setPriority:">-fw_setPriority:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>修改最近一批添加或更新的布局约束优先级</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nonnull</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_setPriority</span><span class="p">:</span>
    <span class="p">(</span><span class="n">UILayoutPriority</span><span class="p">)</span><span class="nv">priority</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
            <div class="task-group">
              <div class="task-name-container">
                <a name="/Constraint"></a>
                <a name="//apple_ref/swift/Section/Constraint" class="dashAnchor"></a>
                <div class="section-name-container">
                  <a class="section-name-link" href="#/Constraint"></a>
                  <h3 class="section-name"><span>Constraint</span>
</h3>
                </div>
              </div>
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraintToSuperview:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraintToSuperview:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraintToSuperview:">-fw_constraintToSuperview:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与父视图属性的约束</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_constraintToSuperview</span><span class="p">:</span>
    <span class="p">(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraintToSuperview:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraintToSuperview:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraintToSuperview:relation:">-fw_constraintToSuperview:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与父视图属性的约束，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_constraintToSuperview</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
                    <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraintToSafeArea:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraintToSafeArea:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraintToSafeArea:">-fw_constraintToSafeArea:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与父视图安全区域属性的约束</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_constraintToSafeArea</span><span class="p">:</span>
    <span class="p">(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraintToSafeArea:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraintToSafeArea:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraintToSafeArea:relation:">-fw_constraintToSafeArea:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与父视图安全区域属性的约束，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span>
    <span class="nf">fw_constraintToSafeArea</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
                   <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraint:toAttribute:ofView:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:">-fw_constraint:<wbr>toAttribute:<wbr>ofView:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与指定视图属性的约束</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_constraint</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
                                   <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                                        <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraint:toAttribute:ofView:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:relation:">-fw_constraint:<wbr>toAttribute:<wbr>ofView:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与指定视图属性的约束，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_constraint</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
                                   <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                                        <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                      <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:withMultiplier:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraint:toAttribute:ofView:withMultiplier:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:withMultiplier:">-fw_constraint:<wbr>toAttribute:<wbr>ofView:<wbr>withMultiplier:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与指定视图属性指定比例的约束</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_constraint</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
                                   <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                                        <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:withMultiplier:relation:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraint:toAttribute:ofView:withMultiplier:relation:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraint:toAttribute:ofView:withMultiplier:relation:">-fw_constraint:<wbr>toAttribute:<wbr>ofView:<wbr>withMultiplier:<wbr>relation:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取添加的与指定视图属性指定比例的约束，指定关系</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_constraint</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">attribute</span>
                                   <span class="nf">toAttribute</span><span class="p">:(</span><span class="n">NSLayoutAttribute</span><span class="p">)</span><span class="nv">toAttribute</span>
                                        <span class="nf">ofView</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">id</span><span class="p">)</span><span class="nv">otherView</span>
                                <span class="nf">withMultiplier</span><span class="p">:(</span><span class="n">CGFloat</span><span class="p">)</span><span class="nv">multiplier</span>
                                      <span class="nf">relation</span><span class="p">:(</span><span class="n">NSLayoutRelation</span><span class="p">)</span><span class="nv">relation</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>attribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>toAttribute</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图属性</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>otherView</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>目标视图</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>multiplier</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>指定比例</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>relation</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>约束关系</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_setConstraint:forKey:"></a>
                    <a name="//apple_ref/swift/Method/-fw_setConstraint:forKey:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_setConstraint:forKey:">-fw_setConstraint:<wbr>forKey:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>设置约束保存键名，方便更新约束常量</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="nf">fw_setConstraint</span><span class="p">:(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nv">constraint</span>
                  <span class="nf">forKey</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="o">&lt;</span><span class="n">NSCopying</span><span class="o">&gt;</span><span class="p">)</span><span class="nv">key</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>constraint</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>布局约束</p>
                                </div>
                              </td>
                            </tr>
                            <tr>
                              <td>
                                <code>
                                <em>key</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>保存key</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_constraintForKey:"></a>
                    <a name="//apple_ref/swift/Method/-fw_constraintForKey:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_constraintForKey:">-fw_constraintForKey:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取键名对应约束</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">nullable</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nf">fw_constraintForKey</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">id</span><span class="o">&lt;</span><span class="n">NSCopying</span><span class="o">&gt;</span><span class="p">)</span><span class="nv">key</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Parameters</h4>
                        <table class="graybox">
                          <tbody>
                            <tr>
                              <td>
                                <code>
                                <em>key</em>
                                </code>
                              </td>
                              <td>
                                <div>
                                  <p>保存key</p>
                                </div>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>布局约束</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_lastConstraints"></a>
                    <a name="//apple_ref/swift/Property/fw_lastConstraints" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_lastConstraints">fw_lastConstraints</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>最近一批添加或更新的布局约束</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">,</span> <span class="n">copy</span><span class="p">,</span> <span class="n">readonly</span><span class="p">)</span> <span class="n">NS_REFINED_FOR_SWIFT</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="n">fw_lastConstraints</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_lastConstraint"></a>
                    <a name="//apple_ref/swift/Property/fw_lastConstraint" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_lastConstraint">fw_lastConstraint</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>最近一条添加或更新的布局约束</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">,</span> <span class="n">readonly</span><span class="p">,</span> <span class="n">nullable</span><span class="p">)</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="n">fw_lastConstraint</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(py)fw_allConstraints"></a>
                    <a name="//apple_ref/swift/Property/fw_allConstraints" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(py)fw_allConstraints">fw_allConstraints</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>获取当前所有约束，不包含Key</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">@property</span> <span class="p">(</span><span class="n">nonatomic</span><span class="p">,</span> <span class="n">copy</span><span class="p">,</span> <span class="n">readonly</span><span class="p">)</span> <span class="n">NS_REFINED_FOR_SWIFT</span> <span class="n">NSArray</span><span class="o">&lt;</span><span class="n">NSLayoutConstraint</span> <span class="o">*&gt;</span> <span class="o">*</span><span class="n">fw_allConstraints</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                      <div>
                        <h4>Return Value</h4>
                        <p>约束列表</p>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_removeConstraint:"></a>
                    <a name="//apple_ref/swift/Method/-fw_removeConstraint:" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_removeConstraint:">-fw_removeConstraint:<wbr></a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>移除当前指定约束，不包含Key</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="nf">fw_removeConstraint</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">NSLayoutConstraint</span> <span class="o">*</span><span class="p">)</span><span class="nv">constraint</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
                <li class="item">
                  <div>
                    <code>
                    <a name="/c:objc(cs)UIView(im)fw_removeAllConstraints"></a>
                    <a name="//apple_ref/swift/Method/-fw_removeAllConstraints" class="dashAnchor"></a>
                    <a class="token" href="#/c:objc(cs)UIView(im)fw_removeAllConstraints">-fw_removeAllConstraints</a>
                    </code>
                  </div>
                  <div class="height-container">
                    <div class="pointer-container"></div>
                    <section class="section">
                      <div class="pointer"></div>
                      <div class="abstract">
                        <p>移除当前所有约束，不包含Key</p>

                      </div>
                      <div class="declaration">
                        <h4>Declaration</h4>
                        <div class="language">
                          <p class="aside-title">Objective-C</p>
                          <pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="n">fw_removeAllConstraints</span><span class="p">;</span></code></pre>

                        </div>
                      </div>
                    </section>
                  </div>
                </li>
              </ul>
            </div>
          </section>
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